S'ybll
a shape-shifting mind-witch encountered by Luke Skywalker and Han Solo just after the Battle of Yavin. She attached herself to Luke, claiming to want his protection from Imperial forces. In an effort to win Luke's confidence, she made herself resemble Tanith Shire, who was still in Luke's thoughts. When she was finally able to draw Luke into her lair and control him, she reverted back to her true form: an ugly old hag. Luke was able to fight through her spell, and tried to escape. S'ybll then projected an image of Darth Vader to battle Luke, but he saw through the illusion and broke her spell. She then tried to use telekinetic powers to physically destroy Luke, but expended all her energies and died before she could rejuvenate herself.